Safety razor



June 24,1930; v 'A. SCHLUSSLER 1,765,805

SAFETY RAZOR Filed March 20, 1925 Patented June '24, 1930 ALFREDSOHL'U'SSLER, BEBLIN-NEUKOLLN, GERMANY SAFETY nazon Application filedlarch 20, 1925, Serial No. 17,061, and in Germany larch 22, 1924.

With the known safety-razors with bent and adjustable blade this latteris pressed down onto the stationary lower clampingplate by therim-parts'of the movableupper clamping-plate, said rim-parts engagingthe blade near 'its cutting-edges and holding these latter in properworking position in which they contact closely with the said rimparts.

Now, it is known thatv while the so-called pre-shaving-is going on,especially in the case of strong growth of the beard or whiskers, anelastic-blade is more agreeable than an inelastic one; and there havealready been 5 devised safety-razors, in which the blade is fixed orclamped at places located more distant from the cutting-edges so thatthe blade-rims yield elastically in a certain slight measure during theshaving.

These raz'ors are not suited however, for the so-called smoothing orfinishing shave as the blade, owing to its yieldingness, glides merelyaway over the hairs. A rigidly clamped blade is, in fact, more suitedfor this last-mentioned operation.

My improved razor is distinguished, in general, by the feature that itanswers all requirements above mentioned, and in particular the gist ofthe invention consists therein that the upper clamping plate is providedeither at only one of its two longitudinal rims, orat both, withchannel-like recesses, by which the respective rim is provided with twoedges, an outer one and an inner one, the outer being more remote fromthe lower clamping plate than is the inner edge ind the position of thetwo edges being such that when the upper clamping-plate is tightly drawnhome against the lowerv one the cutting-edge of the blade clamped inbetween the two plates does not contact with the outer ed e of the upperclamping-plate butcan yielf relatively thereto in that there is a gapbetween that edge and the cutting edge of the blade. But when the outerclamping-plate is moved a little away from the lower one, the bladewhich had been bent circularly between the curved adjacent surfaces ofthe two plates follows at its-rims the outer plate until these rimstouch the outer edges of the upper plate, in consequence whereof thegaps are closed and the blade rims cannot yield outwardly. This takesplace either at only one longitudinal rim of the outer clamping-plate orat both "rims thereof if both are provided with the channel-like recessmentioned in the first part of this paragraph.

There are also a few more characteristic features as regards theclamping-plates; they are dealt with hereinafter.

- My invention is illustrated diagrammati-. cally and by way of examplein the accompanying drawings, in which Figure 1 is a side-view of thehead of a safety-razor constructed according to this invention, thefigure being and the handle-parts which are shown in axial section beingbroken ofl; Figure 2 is a similar View, the upper clamping-plate andthe'blade being shown in another position and the handle-parts beingentirely removed; Figure 3 is a cross-section through a modified upperclamping-plate, and Figure 4 is a side-view of a modification of theentire razor, chiefly, however, of the lower clamping-plate.

Referring to Figs. 1 and 2, the upper clamping-plate 1 is pressed ontothe blade-4 and the lower clamping-plate 9 in known manner by suitablydevised threaded mem-' bers either of the kind shown in Fig. '1 or ofany other kind. I abstain from enteringinto details in this respect asthese members do not form part of the invention. The outer surface ofthe plate -9 and the inner surface of' the plate 1 are bent circularlyin known manner, as is, of course, also the blade when being clamped in.

In the example in question the plate 1' is provided at either of itslongitudinal edges with a channel-like recess 1" whereby an inner edge 2and an outer edge 3 are formed. The edge 2 contacts always with theblade 4, but the edge 3 only when the plate 1 hasbeen moved away alittle from the plate 9, as in Fig. 2. In Fig. 1 the channel or recess 1forms a gap between the rim of the plate 1 and the rim of the blade, inconsequence whereof the blade-rim, or the cutting-edge drawn to 'agreatly enlarged scale; Y

4" respectively, can yield outwardly, but

" when the plate 1 is moved a little off the position of the blade whichis suited for the second shavin in which the cutting-edge shall notyiehiwhereas the other position (Fig. 1) is that suited for the firstshaving.

In the exam 2 one side of t e plate 9 is provided with a channel 6, theouter ed e 5 of which lies below the cutting-edge o the blade, or, moreprecisely, behind, but near it. In other m words: the blade-rim coversthat channel completely. This constructional form of the razor affordsthat advantage over the other form (lefthand half of Fig. 1) that thecutofi articles of hair do not gather below' the bla e-rim and impedeits elasticity.

In the modification shown in ig. 3 the two edges 2 and 3 of, or at, theupper clamping plate 1 are formed by a se arate late 8. Thisconstructional form disc osed t e possibility of changing existingsafety-razors into such'with two edges 2 and 3 according to thisinvention.

In the second modification, Fig. 4, the upper clamping-plate is providedwith a large lower recess 12, and the lower clamping-plate with a largeupper recess 14, and the blade is held merely between ledges 10 and 15,of which the projections 10 are practically of angular cross-sectionwith rounded-oil supporting-edges for the blade, whereas the proections15 are practically flat; their faces lie obliquely with respect to theaxis of the razor and thelr position relatively to one another is suchthat the blade is curved circularly as in Fig. 1. The elasticity of theblade-runs, or of the cutting-edges respectively, in the direction tothe edges 3 is in this constructional form greater than in Fig. 1,because also the middle part of the blade can give way (in the directionto the handle). In all other respects matters are as described withrespect to the other constructional forms shown and described.

The rims of the lower clamping-plate 7 are, of course, provided in knownmanner with many parallel incisions whereby each rim is turned into akind of comb. Each incision communicates at its inner end with thechannel 6 (Figs. 1 and 2). But as regards Fig. 4,. matters are in thisrespect otherwise, in that the parallel incisions extend obliquely; inother words: each incision forms a narrow channel having an obliquebottom 11 (Fig. 4) terminating at the lowermost point 13 where there nowexists a continuous edge by which the superfluous soapfroth is removedfrom the skin. Besides, the cut-off particles of hair get easily intothe recess 14 through the gaps between the comb-forming members at theinner ends 1e illustrated in Figs. 1 and thereof. The puresoap-froth'removed by,

or at, the edge 13 which is free from hairparticles may be used overagain.

Generally the lefthand and the righthand .half of the razor will be madealike, but if desired or for certain cases they may be different onebeing then of the known usual construction, the other of the improvedconstruction, either according to Figs. 1 and 2, or according to Fig. 4.

The PIOVlSlOIl that the cutting-edge of the blade extends over thechannel 6, 1.- e. out-.

would be exposed to the danger of beingtween the blade-rim and thepoints or parts 5 of the comb-teeth.

It is not indis ensabl requisite that the edge 2 forms a 'nd 0 ledgebetween the concave face of the upper clamping-plate and the recess 1;it is, in general, sufficient if it is actually a mere e ge between thatface and', the slightly curved or, perha s, even plain surface extendingfrom it to t e edge 3.

I claim:

1. A safety razor comprising in combina-, tion an elastlc blade, a lowerclamping plate having a convex upper surface, an upper clamping platehaving a concave lower surface concentric with said convex surface, theconcave surface of said upper clamping plate being undercut along itsedges so that two contact strips are formed along each edge,

upper clamplng plate having a concave a lower clamping lower surfaceconcentric with said convex surface, the concave 'surface of said upperclamping plate being undercut along its edges so that two contact stripsare formed along'each edge, the outer strip extending to a greaterradial distance from the centre about which said surfaces are curved,than the inner strip and said upper and lower surfaces being partly cutaway at the rear of said inner strlps so as to constitute a pair.

of parallel supporting faces on both sides of said blade.

In testimony whereof I aflix my signature.

ALFRED SCHLUSSLER.

